ML20003B434
| ML20003B434 | |
| Person / Time | |
|---|---|
| Site: | 07109079 |
| Issue date: | 12/18/1980 |
| From: | Hansen L NUCLEAR PACKAGING, INC. |
| To: | |
| Shared Package | |
| ML20003B431 | List: |
| References | |
| NUDOCS 8102100803 | |
| Download: ML20003B434 (1) | |
Text
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NUCLEAR u
PACKAGING, INC.
l pfGN10 815 SO. 28TH STREET
- TACOMA, WASHINGTON 98409 - (206) 572 2775 + 8381243
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December 18, 1980 s\\ '
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Charles E.
MacDonald, Chief IU'l '
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Transportation Certification Branch m!.ss Division of Fuel Cycle & Material Safety
. - c -70t4 Nuclear Regulatory Commission 1
Washington, D. C. 20555
Dear Mr. MacDonald:
We respectfully request revision of Certificate of Compliance No. 9079, Model HN-100, Series 2,.to permit optional use of improved materials of construction and optional use of an integral stainless steel liner.
The requested change to materia'as of construction would permit optional.use of ASTM A-516, Grade 70 material in all instances where ASTM A-36 is presently specified.
ASTM A-516, Grade 70 possesses slightly improved strength properties over A-36 (5% greater yield stress and 20% greater ultimate stress) and clearly superior brittle fracture resistance properties, possessing a nil-ductility transition temperature some 40 -
50 below that of A-36.
The second requer~ed change would permit optional use of a twelve gauge stainless steel, Type 304, ASTM A-240, cask interior cavity surface liner.
The liner will be permanently installed in the cavity and seal welded along all cdges.
Enclosed is our check number 5361 for $150.00 to cover the minor nmendment fee ic:t Cate9crf 11E Packages under 10 CFR 170.31.
Thank you.
Sincerely, 1
NUCL2AR PACKAGING, INC.
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Larry Hansen l
LJH/ pro I
Enclosure:
Check Number 5361
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P00R ORIGINAL 81022008o3 j
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